NEW YORK (CBSNewYork) — Just days after a Mount Sinai Medical Center urologist was allegedly caught trying to take upskirt photos of a woman at a New York City subway station, new developments indicate he may have done the same thing on previous occasions.

Investigators searched the West Village apartment of Dr. Adam Levinson on Friday and said they found evidence that he had taken lewd photos of other unknowing victims, CBS 2’s Hazel Sanchez reported.

Police executed a search warrant on Levinson’s home and found several images on a camera they seized, CBS 2 has learned.

Prosecutors said a transit cop in the Union Square subway station spotted Levinson during Tuesday night’s rush hour putting a pen on a newspaper, and then holding the pen under a woman’s skirt. The cop took the pen away from Levinson and discovered not only could the pen write, it could also record video.

According to investigators, the transit officer found several video clips Levinson allegedly recorded underneath the woman’s skirt.

A witness also told police he saw Levinson doing the same thing on the No. 4 train from 59th Street to 14th Street and then again on the L train platform.

Prosecutors said Levinson was charged with unlawful surveillance in the second degree. If convicted, he could face up to four years in jail.

The hospital he works at reacted swiftly, saying in a statement: “Mount Sinai has suspended Dr. Levinson because of his alleged conduct underlying the arrest. Mount Sinai is performing its own investigation for the protection of its patients and employees.”

According to the bio on Mount Sinai’s website, Levinson studied at UC-Berkeley, Georgetown, and graduated at the top of his class at New York Medical College.